package Thread;
 class MyThread extends Thread{
     @Override
     public void run() {
        while (true){
            System.out.println("hello Thread!!!");
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    throw new RuntimeException(e);
                }
        }
     }
 }
public class Demo1 {
    public static void main(String[] args) {
        Thread t = new MyThread();
        t.start();
        while (true){
            System.out.println("hello main!!!");
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
        }
    }
}
